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MC68HC908GR4MP Datasheet(PDF) 20 Page - Freescale Semiconductor, Inc |
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MC68HC908GR4MP Datasheet(HTML) 20 Page - Freescale Semiconductor, Inc |
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20 / 286 page  General Description MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7 20 Freescale Semiconductor • 7680 bytes of on-chip FLASH memory on the MC68HC908GR8 and 4096 bytes of on-chip FLASH memory on the MC68HC908GR4 with in-circuit programming capabilities of FLASH program memory • 384 bytes of on-chip random-access memory (RAM) • Serial peripheral interface module (SPI) • Serial communications interface module (SCI) • One 16-bit, 2-channel timer (TIM1) and one 16-bit, 1-channel timer (TIM2) interface modules with selectable input capture, output compare, and PWM capability on each channel • 6-channel, 8-bit successive approximation analog-to-digital converter (ADC) • BREAK module (BRK) to allow single breakpoint setting during in-circuit debugging • Internal pullups on IRQ and RST to reduce customer system cost • Clock generator module with on-chip 32-kHz crystal compatible PLL (phase-lock loop) • Up to 21 general-purpose input/output (I/O) pins, including: – 19 shared-function I/O pins – Up to two dedicated I/O pins, depending on package choice • Selectable pullups on inputs only on ports A, C, and D. Selection is on an individual port bit basis. During output mode, pullups are disengaged. • High current 10-mA sink/10-mA source capability on all port pins • Higher current 15-mA sink/source capability on PTC0–PTC1 • Timebase module with clock prescaler circuitry for eight user selectable periodic real-time interrupts with optional active clock source during stop mode for periodic wakeup from stop using an external 32-kHz crystal • Oscillator stop mode enable bit (OSCSTOPENB) in the CONFIG register to allow user selection of having the oscillator enabled or disabled during stop mode • 4-bit keyboard wakeup port • 42-pin shrink dual in-line package (SDIP), 32-pin quad flat pack (QFP), 28-pin plastic dual-in-line package (DIP), or 28-pin small outline integrated circuit (SOIC) • Specific features of the MC68HC908GR8 in 28-pin DIP and 28-pin SOIC are: – Port B is only 4 bits: PTB0–PTB3; 4-channel ADC module –No Port C bits 1.2.2 Features of the CPU08 Features of the CPU08 include: • Enhanced HC05 programming model • Extensive loop control functions • 16 addressing modes (eight more than the HC05) • 16-bit index register and stack pointer • Memory-to-memory data transfers • Fast 8 × 8 multiply instruction • Fast 16/8 divide instruction • Binary-coded decimal (BCD) instructions • Optimization for controller applications • Efficient C language support |
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